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Related Experiment Video

Updated: Aug 22, 2025

A New Technique for Quantitative Analysis of Hair Loss in Mice Using Grayscale Analysis
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[Translated article] Trichoscopy in Alopecia Areata.

H Gómez-Quispe1, O Muñoz Moreno-Arrones2, Á Hermosa-Gelbard2

  • 1Servicio de Dermatología, Hospital Universitario Ramón y Cajal, Departamento de Medicina, Facultad de Medicina, Universidad de Alcalá, IRYCIS, Madrid, Spain.

Actas Dermo-Sifiliograficas
|November 11, 2022
PubMed
Summary

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Androgenetic Alopecia: Narrative Review of Current Therapies and Proposal of a Practical Algorithm for Pharmacological Treatment.

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Trichoscopy aids in diagnosing alopecia areata, an autoimmune hair loss condition. Specific findings like yellow dots indicate chronic disease, while their disappearance signals treatment success.

Area of Science:

  • Dermatology
  • Autoimmune Diseases

Background:

  • Alopecia areata is an autoimmune condition targeting hair follicles.
  • It causes patchy hair loss on the scalp and body.
  • Clinical diagnosis is standard, but can be enhanced.

Purpose of the Study:

  • To review the utility of trichoscopy in diagnosing and monitoring alopecia areata.
  • To highlight key trichoscopic findings associated with the condition.
  • To correlate trichoscopic features with disease activity and treatment response.

Main Methods:

  • Review of existing literature on trichoscopy in alopecia areata.
  • Description of common and less common trichoscopic findings.
  • Analysis of how trichoscopy aids in diagnosis and treatment monitoring.
Keywords:
Dermatoscopia del cuero cabelludoDermoscopy of scalpVideodermatoscopiaVideodermoscopy

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Main Results:

  • Common findings include yellow dots, black dots, exclamation mark hairs, short vellus hairs, and coudability hairs.
  • Trichoscopy is a rapid, non-invasive diagnostic aid.
  • Disappearance of black dots, broken hairs, and exclamation mark hairs suggests good treatment response.
  • Persistent yellow dots indicate chronic disease and poor treatment outcomes.

Conclusions:

  • Trichoscopy is a valuable tool for alopecia areata diagnosis and management.
  • Specific trichoscopic features can predict disease chronicity and treatment efficacy.
  • This technique reduces the need for invasive diagnostic procedures.